Flat Mount Adapter (IS-FM)

$35.00 CAD

Adapter for using a flat mount caliper on a frame or fork with an IS style brake mount.

SKU: ASS0007 Category:


This adapter allows you to use a flat mount caliper on a frame or fork that  was designed using the IS mount standard.


  • Rear IS mount (Frame): This adapter will only work with 160 mm. rotors.
  • Front IS mount (Fork): This adapter will only work with 180 mm. rotors.
  • Tested with Shimano, SRAM and Campagnolo flat mount calipers. This adapter is intended to be used with 140 mm. calipers. 160 mm specific calipers like ones made by Hope And Campagnolo  will increase the rotor size by 20 mm.
  • IMPORTANT : This will not be compatible with all IS mount frames and forks. The caliper and adapter extend out from the mounting surface.  Clearance between the mounting holes is required.  Please use the IS to Flat Mount Adapter Drawing (Letter, A4) to help determine if it will work for your application.is flat mount adapter compatibility

IS to Flat Mount Adapter Drawing:

  • Letter paper size: Letter Drawing
  • A4 paper size: A4 Drawing
  • When printed actual size the drawing can be used to check the compatibility of your frame or fork as shown below.flat mount caliper on i.s. frame


  • CNC Machined from 6061-T6 Aluminum, tumbled and anodized.
  • Weight: 15 g (without screws)
  • Weight: 20 g (with screws)


  • Instructions
  • Caliper position is adjusted using shim washers. Six washers are included with each adapter.  More washers or special tools may be required for proper adjustment.


Additional information

Weight .030 kg
Dimensions 12 × 7 × 1 cm

Black, Grey, Red